Septic & Wastewater

Nearly 1 in 4 U.S. households depend on an individual on-site sewage system or a small community cluster system to treat their wastewater. If properly built and maintained, decentralized wastewater treatment systems have many benefits, including:

Reducing exposure to untreated sewage

Protecting groundwater, lakes, and the Puget Sound from contamination

Allowing for development in outlying communities and properties

Snohomish County septic system services

The Snohomish Health District works to ensure that septic systems are not only located and installed correctly but also kept in good working condition by providing the following services:

How do I report a septic system problem?

The Snohomish Health District investigates complaints and problems with septic systems in the county. To report a problem, email the completed Complaint Investigation Request (PDF) to wwwquestions@snohd.org or mail it to the address below: